Folding graphoscope



(No Model.)-4

J. LEB.

' FULDING GRAPHOSGOPB.

No. 252.321. Patented Jan. 17,1882.

mfg@

N. paens. mmm m iam. washing, o. s;

f UNITED STATES PATENT OFFICE.

JAMES LEE, NEW BRIGHTON, NEW YORK.

t FOLDING eRAPHoSc-OPE.

SPECIFICATION forming part of Letters Patent No. 252,321, dated January17, 1882.

Application filed August 10, 1881. (No model.)

To all whom 'it may concern:

Be it known that I, JAMES LEE, of New Brighton, Richmond county, NewYork, have particularly described, and more at length recited in theclaims.

Figure l is a side elevation of a graphoscope apparatus embodying myinvention. a plan of the same. Fig. 3 is a rear end view ofthe same, thelens-piece on the front not being shown. Fig. t is a side elevation ofthe same on a reduced scale, and showing the parts in position for use;and Fig. 5 is a front view on a similarly-reduced scale, showing thelenspiece and base-bar.

A is the base, uponwhich the working parts are mounted in threeportions, extending lonvgitudinally of said base, vthe central portion,a, of which is hinged at the rearward end at c2 to the standard B, andthe portions a. on either side of the central portion, a, being ,made toslide longitudinally on said portion c by suit able means, such as thetongues and grooves shown plainly in Fig. 3.

The standard B is preferably made in the form of a box, as shown,and`being thus made, the portions a a of theA base-plate A, when theyare adjusted in the closed position shown in Fig. 1, constitute a hingedcover for said box. A bar, G, which constitutes the support for thelens-piece D, extends across the'base from one to the other oftheforward ends ofthe slides c', to each of whichit is there hinged, asseen at c.

The lens-piece D carries the graphoscopic lens at d. Upon the centralfixed portion, a, of the base, at the rearward end, is hinged thegraphoscopic picture-holder E.

The lens-piece D is detachably seated on the supporting-bar C, andthisis'accomplished by means of pins d2 on its lower edge fitting intosockets cin the upper face of said bar.

Gr Gr are leaf-springs, which are fastened at gto the upper face of theslides a', as shown, and their free ends g bear upon the extremities ofthe hinged supporting-bar C at each end thereof, as nseen plainly inFig. 2.

Fig. 2is

The upper face of the supporting-bar Gis 4preferably rounded off tofacilitate the operation of the parts. I thus produce a'convenient meansof holding the bar C and the lens-piece which it supports in an uprightposition, the

springs acting to prevent its falling backward upon the base, while by aslight pressure exerted upon the lens-piece the force ofthe springs maybe overcome and the bar C and lens-piece be folded backward upon thebase, as seen in dotted lines in Fig. 1, where it will be held thusfolded down by the pressure of the springs upon the upturned side faceofthe bar.

Suitable devices for sustaining the base and its supported parts atadesirable incline or augle on the standard when using the instrumentare provided, as seen in Fig. 4.

It is evident that by means of the devices and their arrangement which Ihave described I constitute an instrument in which the lenspiece, whichis in convenient reach of the user without getting the hand between thelens and the picture, may be drawn from or pushed toward the fixedpicture-holder, the lens-piece being mounted on the slides a and the picture-holder being fixed on the base c.

It is also evident that by means of the devices described the lens piecemay be readily unseated from the bar C on the slides at pleasure andpacked within the standard or box B during transit of theinstrument fromplaceto place.

Itis also evident that the devices I have shown and described areapplicable to either an instrument combining both stereoscope andgraphoscope or to one constituting a stereoscope or graphoscope alone.

When a combined graphoscope and stereoscope is constructed embodying myinvention the lens-piece D is'arranged to carryfthe graphoscopic lens inthe upper portion of said piece,

' as at d, and the stereoscopic lenses in the lower portion of saidpiece, as at d', and a stereoscopic picture-holderV is rigidly securedon the fixed portion a of the base, about midway thereof, as at F, allplainly seen in Fig. 1,

I do not claim broadly a graphoscope in which the picture-holderisrigidly fixed on the base-plate and the lens-holder is movable nor doI claim broadly a graphoscope in which the lens-holder is capable ofbeing held erect by springs or of being folded down upon the base- IOCplate; nor do I claim broadly a lens-holder detachable from thebaSepIate; but I desire to claim only the devices shown and describedby, means of Which the objects herein specied are attained.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a graphoscope apparatus, the base A, composed of the centralportion, a, and the side pieces, a', the centralportion beinghinged tothe standard B, and havingxed thereto the picture-holder, and the saidside pieces being arranged to slide longitudinally on said centralportion and carrying the lens-holder, and the entire base-plate thusconstructed being adapted,when closed, to act as a cover for a box-likestandard, as and for the purpose specified.

2. In a graphoscope apparatus, the combination, with the slides a',Working ou the central portion, @,of the base-plate, of thesupportingbar C, extending from one to the other of and hinged to thesaid slides and carrying thelensholder D, together with the leaf-springsG, acting upon the extended ends of said bar, al1sub. stantially as andfor the-purpose specified.

3. In a graphescope apparatus having the hinged supporting-bar G,carried by the slides a, the lens-holder D, detachably seated ou saidsupporting-bar by means of the pins d2 and sockets c', as and for thepurpose specified.

Witness my hand August 8, 1881.

JAMES LEE.

In presence of- A. G. N. VERMILYE, A. S. FITCH.

